Pivot-bearing for railway-cars.



H. E. PETTY.

PIVOTBEARING FOR RAILWAY CARS.

APPLLGATION FILED NOV.24,1913.

1,089,260 Patented M51113, 1914.

IT" WT] [1 H m] g f E i I @i -71 Z yj 5 m; |||||L3mw n Y 1i q, Z? I Witnesses Inventor Attorneys TTED STATES PATENT @lhFTCE.

HARRY E. PETTY, OF NEODESHA, KANSAS, ASSIGNOR OF ONE-SIXTH TO CHARLES D. MCCOY, ONE-SIXTH TO JAMES H. BEEGLE, AND ONE-SIXTH '10 NICHOLAS S. SIBERT,

ALL OE NEODESHA, KANSAS.

PIVOT-BEARING FOR RAILWAY-CARS.

Specification of Letters Patent.

Application filed November 24 1913.

Patented Mar, 3, 1914.

Serial No. 802,748.

To all whom it may concern:

Be it known that I, HARRY E. Pn'r'rv, a citizen of the United States, residing at Neodesha, in the county of Wilson and State of Kansas, have invented a. new and useful Pivot-Bearing for Railway-Cars, of which the following is "a specification.

The present invention appertains generally to rolling stock, and relates more particularly to a pivot bearing for railway cars.

It is the object of the present invention to provide a novel and improved pivot bearing for swiveling a car truck to the body, whereby the truck wheels may readily follow the rails, without any tendency to climb thereon, as is frequently the case when the truck pivots are stiff and which not unfrequently results in wrecks.

Another object of the present invention is to provide a device of the nature indicated, comprising a unique assemblage of parts, connecting the car body bolster and truck bolster, for permitting the truck bolster to swing freely in a horizontal plane, and to have limited vertical swinging movements, to permit of a slight sidewise swaying or tilting of the car body.

A further object is to provide a device of the character specified, which will enable the body and truck bolsters to be readily attached and detached.

With the foregoing general objects outlined, and with other objects in view, which will be apparent as the nature of the inven tion is better understood, the presentinvention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed, can be made within the scope of whatis claimed, without departing from the spirit of the invention.

In the accompanying drawing, the invention has been illustrated in its preferred embodiments wherein :Figure 1 is a fragmental elevation of a companion pair of car body and truck bolsters with the present improvements applied thereto, parts being shown in section. Fig. 2 is a cross section taken on the line 22 of Fig. 1. Fig. 3 is a cross section of a modified form.

In the drawing, the car body bolster is designated by the numeral 1 and the truck bolster, by the numeral 2.

In carrying out the present invention, a pair of castings and 4': are bolted to the bottom and top of the body and truck bolsters 1 and 2 respectively. The lower easting 1 is provided with a central socket or concaved recess 5, which is surrounded by an annular rabbet 6, forming the annular flange 7.

A shank or stem 8 is secured within a socket or bore provided centrally in the casting 3, and is provided with a flange or disk 9 intermediate its ends resting against the bottom of the casting The shank 8 is provided with a helm-spherical head 10 seated snugly within the socket or depres sion 5, the flange or disk 9 being disposed loosely within the rabbet 6, so as to be loosely surrounded by the flange 7. The flange 7 and casting 3 are spaced slightly apart, whereby the castings 3 and. a may have limited swinging movements vertically relative to each other. Thus, the casting l serves as a bearing for the pivot element 810, whereby the truck bolster 2 is free to swing horizontally about the pivot element as a center. The shank 8 of the pivot element may be circular in cross section, or may be square or non-circular in cross section, to assist in holding it in place.

A pair of locking pins. 11 are inserted through the casting 4L transversely of the bolster 2, and pass through the socket 5, slightly above the flat face of the head 10, whereby the pins 11 will maintain the head 10 within the socket 5, butwill permit the head 10 to have limited movements within the socket 5, in order that the shank 8 may tilt relative to the bolster 2.

In use, the present pivot hearing will effieiently serve its purposes, and will also eliminate the necessity for employing the usual stops between the ends of the bolsters 1 and 2, as are commonly employed, for limiting the swaying motion of the car body, it being noted that the transverse swinging movements of the car bolster 1, are limited by the head 10 engaging the pins 11, and by the flange 9 contacting with the walls of the rabbet 6. To detach the car.bolster 1, from the truck bolster 2, it is merely necessary to withdraw the locking pins 11, which will enable the pivot member to be with drawn from the socket 5 of the truck castin 4.

In the variation illustrated in Fig. 3, the castings 3 and 4 attached to the bolsters 1 and 2, are relatively thin or fiat, the socket portion 5 of the casting 4 being set into the bolster 2, to reduce the space between the two bolsters. The casting 4t is provided with an annular flange 7 surrounding the socket portion 5 to provide the rabbet 6, and the casting 3 is provided with a circular boss 9 disposed loosely within the rabbet 6, the boss 9 having the shank 8 provided with the hemi-spherical head 10 seated within the socket portion 5. Locking pins 11 are engaged transversely through the bolster 2 and the socket portion 5, to lock the head 10 in position. The modified structure will have the several advantages above noted, and will carry out the desired results in a highly satisfactory manner.

From the foregoing, taken in connection with the drawing, the many advantages and capabilities of the present device will be obvious to those familiar with the art, it being noted that the objects aimed at have been carried out in a satisfactory manner.

Having thus described the invention, what is claimed as new is:

1. In a pivot bearing, a pair of members, one having a concaved socket, and the other having a shank entering the socket and provided with a hemispherica1 head snugly engaging the socket, and a pair of locking pins engaged through the first mentioned member adjoining the flat face of the said head.

2. In a pivot bearing, a pair of castings, one having a socket and a surrounding rabbet, and the other having a circular portion disposed loosely within and arranged to contact with the rabbet to limit the swinging movements of the castings relative to each other, and a shank entering the socket the shank having a head working within the socket, and locking means carried by the first mentioned casting for retaining the head within the socket.

3. In a pivot bearing, a pair of castings, one having a concaved socket and a Sur rounding annular rabbet, and the other casting having a circular portion disposed loosely within the rabbet, and a shank entering the socket, the shank having a hemispherical head loosely engaging the socket, and a pair of locking pins engaged through the first mentioned casting adjoining the flat face of the said head.

In testimony that I claim the foregoing as my own, I have hereto atiixed my signature in the presence of two witnesses.

HARRY E. PETTY. lVitnesses:

H. H. KIMBALL, R. K. GRAIN.

Copie: o! thh patent may be obtained for five cents each, by addressing the Commissioner at Pstenta,

Washington, D. G. 

